Water-gage.



Patented Dec. I8, I900.

S L E G N E L 9 4 6 6 0 N WATER GAGE.

{Application' filed June 18, 1900.)

(No Model.)

UNITED STATES PATENT OFFICE.

EMIL EN GELS, OF ENGELSKIROHEN, GERMANY.

WATER-GAGE.

SPECIFICATION forming part of Letters Patent No. 664,019, dated December 18, 1900. Application filed June 18,1900. Serial No. 20,694. (No model.)

To aZZ whom it may concern.-

Be it known that I, EMIL ENGELS, manufacturer, a citizen of Germany, residing at Engelskirchen, Rhenish Prussia, Kingdom of Prussia, Germany, have invented certain new and useful Improvements in Water-Gages; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a safety device for water-gages, forming a steam-tight jacket around the gage-glass, and is calculated in case of the gage-glass breaking to retain the pieces of the broken gage-glass and the steam, the latter passing through a pipe to any suitable place, where it may escape without causing danger or damage.

The provisions made for the escape of the steam are of great importance, as by this means the filling with steam of the engineroom or the drivers cab on a locomotive is made impossible. In the case of locomotives such an advantage is especially important, since the escaping steam prevents the driver from seeing the track before him and might easily lead to very serious consequences:

In the accompanying drawings, Figure 1 is a side View, Fig. 2 a horizontal section on the line A B of Fig. 1, and Fig. 3 a vertical section, of my new safety device.

The gage-glass a is surrounded in front by a glass screen I) of horseshoe section. The longitudinal edges of said screen are brought into contact with the metal back 0 and held to the latter by means of the straps d. In order to make this joint steam-tight, a packing a has been inserted in the longitudinal grooves on the edges of the metal back, said packing being firmly pressed against the edges of the glass screen by said straps, thus forming a tubular structure. The top and bottomof said structure are closed up by the caps f and made steam-tight by means of the packing-rings g, while the same purpose with regard to the gage-glass heads is attained by the packing-rings h.

In order to insert the safety device and secure it in its place between the gage-glass heads, the socket Q: of the upper cap f is screwed into the latter.

A pipe 70 is secured to the metal back of the device, through which, in case of the gageglass bursting, the steam may be led to any suitable place where it can do no harm.

The glass screen of the safety device is preferablymade of wire-glass-i. a, glass in which wireis embedded-since it will hold together even if fractured by the fragments of the gage-glass when the latter bursts.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

In a safety device for water-gages the combination of a gage-glass, a glass screen of horseshoe section in front and a metal back with an outlet behind said gage-glass, straps holding said screen and said back together, caps surrounding the gage-glass heads and the ends of said glass screen and said metal back, and a threaded socket in the upper cap to secure said device between the gage-glass heads.

In testimony whereof I affix my signature in presence of two witnesses.

EMIL ENGELS. Witnesses:

FRANK MALLETT, WILLIAM H. MADDEN. 

